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    Coccolithophores are microscopic algae that first appeared 220 million years ago, and flourished during the cretaceous period. They produce peculiar plates called cocoliths out of calcium carbonate, and incorporate them into an external shell. They constantly remove carbon from the atmosphere as they die and sink to the ocean floor, producing chalk. This is an important feedback system in the global carbon cycle. Seriously, how does cellular machinery produce these structures? Life is...

    Coccolithophores (microscopic algae)

    Plant Cells

    Diatoms

    Very low power scanning electron microscope image, showing normal bone architecture in the fourth lumbar vertebra of an 41 year year old man (x8). A regular pattern of interconnected plates and thick struts of bone can be seen

    Bismuth crystal

    Diatom . Diatoms are photosynthetic plankton (microscopic algae) ubiquitous in oceans and freshwater systems. They are a major source of nutrients for marine organisms as well as a major producer of oxygen. They have been dubbed the “lungs of the ocean,” producing about 20 % of the oxygen we breathe–as much as all the rainforests combined .

    The surface of a mosquito egg ...

    Capillaries in lung. Capillaries surround the individual alveoli, air sacs, allowing for the exchange of oxygen and carbon dioxide between the capillaries and the alveoli.

    Sea urchin / Sea egg / Evechinus chloroticus / Kina, whatever you call it, for some it is a delicacy from the sea.

    Radiolaria

    Electron Microscope image of DNA

    Cells.

    Drosophyllum lusitanicum, commonly known as the dewy pine, a carnivorous plant from Spain. Yikes!!!

    A macro picture of a polychaete or bristle worm. These critters survive the intense pressures of our deepest oceans where sunlight never penetrates.

    Microscopic hairs in your inner ear.

    Coccolithophores

    microscopic cross section of clematis root • tom grundy

    Fossil Crinoids (Uintacrinus socialis), Museo Smithsonian de historia natural, Washington, D.C.

    Pollen: Pollen from sunflower, morning glory, lily and castor bean magnified some 500 x by Dartmouth Electron Microscope Facility

    Shark skin under electron microscope.